Home / 870,241.31-1,305,629.22-415,412.93

Finding the Fourth Proportional to 870,241.31, 1,305,629.22 and 415,412.93

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Solution

The fourth proportional to 870,241.31, 1,305,629.22 and 415,412.93 is: 623,246.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,241.31 : 1,305,629.22 = 415,412.93 : x
  2. Step 2: Convert to fraction form
    870,241.31/1,305,629.22 = 415,412.93/x
  3. Step 3: Cross multiply
    870,241.31x = 1,305,629.22 × 415,412.93
  4. Step 4: Simplify right side
    870,241.31x = 542,375,257,696.75
  5. Step 5: Solve for x
    x = 542,375,257,696.75/870,241.31
  6. Step 6: Final answer
    x = 623,246.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.